leds: lt3593: Make use of device properties

Device property API allows to gather device resources from different sources,
such as ACPI. Convert the driver to unleash the power of device property API.

Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>

drivers/leds/Kconfig

@@ -617,7 +617,6 @@ config LEDS_LT3593
 	tristate "LED driver for LT3593 controllers"
 	depends on LEDS_CLASS
 	depends on GPIOLIB || COMPILE_TEST
-	depends on OF
 	help
 	  This option enables support for LEDs driven by a Linear Technology
 	  LT3593 controller. This controller uses a special one-wire pulse

drivers/leds/leds-lt3593.c

@@ -7,8 +7,9 @@
 #include <linux/delay.h>
 #include <linux/gpio/consumer.h>
 #include <linux/slab.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of.h>
+#include <linux/property.h>
 
 #define LED_LT3593_NAME "lt3593"
 
@@ -68,9 +69,6 @@ static int lt3593_led_probe(struct platform_device *pdev)
 	struct led_init_data init_data = {};
 	const char *tmp;
 
-	if (!dev_of_node(dev))
-		return -ENODEV;
-
 	led_data = devm_kzalloc(dev, sizeof(*led_data), GFP_KERNEL);
 	if (!led_data)
 		return -ENOMEM;
@@ -119,7 +117,7 @@ static struct platform_driver lt3593_led_driver = {
 	.probe		= lt3593_led_probe,
 	.driver		= {
 		.name	= "leds-lt3593",
-		.of_match_table = of_match_ptr(of_lt3593_leds_match),
+		.of_match_table = of_lt3593_leds_match,
 	},
 };